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stich3 [128]
2 years ago
6

Nikki bought a patio set on sale for $480. The original price was $850. What was the rate of discount?

Mathematics
1 answer:
ASHA 777 [7]2 years ago
3 0

Answer:

43.5 % decrease

Step-by-step explanation:

Take the original price and subtract the new price

850-480

370

Divide by the original price

370/850

.435294118

Change to percent form by multiplying by 100

43.5294118 % decrease

43.5 % decrease

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Find a polynomial for the sum of the shaded<br> areas of the figure. A = 6, B = 4
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Answer:

The polynomial for the sum of the shaded  \pi r² - 20 \pi

Step-by-step explanation:

Given as :

The figure is shown which is of concentric circle with radius B , A , r

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Now, The circumference of circle = 2 \pi R , where R is the radius

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<u>Similarly</u>

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The circumference = 2 \piR = 2 \pi A

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Now, <u>The area of circle with radius r is</u>

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Or, Area = \pi r²

Now,

The sum of shaded region area = The area of circle with radius r - ( The circumference with radius B + The circumference with radius A )

Or, The sum of shaded region area =  \pi r² - ( 8 \pi + 12 \pi )

Or,  The sum of shaded region area =  \pi r² - 20 \pi

Hence The polynomial for the sum of the shaded area is \pi r² - 20 \pi  Answer

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